Portable machine for cutting marble, ceramics, etc.



F. G. POHL July 23, 1942.

, ETC

PORTABLE MACHINE FOR CUTTING MARBLE, CERAMICS Filed Oct. 30, 1941 3Sheets-Sheet l INVENTOR. FEA/VK I PoHL July 28, 1942. F. G. POHLPORTABLE MACHINE FOR CUTT ING MARBLE, CERAMICS, ETC

FiledOct. 30, 1941 3 Sheets-Sheet 2 Q ma .1 a 1 NP mmm WQ .mw M M. F n5J r a 5.5 9% H 5? gig I. WK

BY v

w 49 ATTORNEKS July 28, 1942. F. G. POHL PORTABLE MA'cHINfiFoR CUTTINGMARBLE, CERAMICS 3' Sheets-Sheet 3 Filed Oct. 30, 1941 Patented July 28,1942 UNITED STATES PATENT OFFICE PORTABLE MACHINE FOR CUTTING MARBLE,CERAMICS, ETC.

Frank G. P0111, Flemington, N. J. Application October 30, 1941, SerialNo. 417,058 7 8, Claims- (Cl. 51-176) This invention relates to a marblecutting machine and refers more particularly to a portable machine forcutting marble, slate, tile and the like.

An object of the present invention is the provision of a dual tablemachine which can be easily adjusted for cutting small or large slabs ofmarble or tile and which can be used as a bench cutter or a floorcutter.

Another object is the provision of a cutting machine which is movable ontracks to cut marble slabs of any length, thereby saving the, cost ofhauling to and from marble shops during alteration work.

A further object is the provision of a marble cutting machine which canbe moved easily and which is light in weight and compact in con-.

struction. 7

Yet another object, is the provision of a single marble cutting machinehaving an upper general purpose saw table for cutting tile or any othermaterial which may be cut dry, and a lower table for cutting heavy slabsrequiring water on the wheel.

Other objects of the present invention will 7 become apparent in thecourse of the following specification.

The objects of the present invention may be realized through theprovision of a marble cutting machine having a track and aroller-carrying frame mounted upon the track with a three point bearingsupport and carrying a drive for the cutting wheel and supporting meanswhich carry the cutting wheel and its drive and which may be shifted inrelation to the frame to adjust the position of the cutting wheel. Thecutting wheel is so mounted that it can be swung in relation to theframe to an upper position or a lower position. In the upper position,the cutting is done on a table carried by the frame. In the lowerposition, the cutting is done on the floor or on a lower table, and thenthe upper table serves as a support for a water reservoir connected withsuitable means supplying water to the cutting wheel.

The invention will appear more clearly from the following detaileddescription when taken in connection with the accompanying drawingsshowing, by way of example, a preferred embodiment of the inventiveidea.

In the drawings:

Figure 1 shows a marble cutting machine constructed in accordance withthe principles of the present invention, in front elevation, some partsbeing broken off, with the water supplying attachment removed.

Figure 2 shows the machine in side elevation and also illustrates thewater fender attachment.

Figure 3 is a horizontal section through the machine along the line 3-3of Figure 1, the illustrated machine being provided with the watersupplying attachment.

Figure 4 is a horizontal section through the machine along the line 4-5of Figure 1.

Figure 5 is a fragmentary front view illustrating the water supplyingattachment.

The marble cutting machine shown in the drawings includes a frame .19carried by a track II.

The frame lil comprises four angular posts or uprights I2, l3, I l andI5 (Fig. 3), the lower ends of which are respectively mounted by angleirons [6 to I9 and rivets 2!] to 23 upon a lower platform 24.

The platform 23 is supported upon three wheels 25, 26 and 21. Two wheels25' and 26 are situated upon the front side of the frame at oppositeends thereof, while the wheel 21 is situated in the middle of the frameupon the rear side thereof. The wheel is carried by a pillow block 28attached to the underside of the platform 24 by bolts 29. A bearing 30and bolts 3| connect the wheel 25 to the platform 24, while the wheel 21is supported by a pillow block 32 attached by bolts 33 to the platform24.

The front wheels 25 and 26 are provided with V-shapeol grooves 34 whichrun upon the sharp upper edge 35 of a rail 36; The rear wheel 21 has aflat groove 3! engaging the flat upper edge 38 of a second rail 39 (Fig.2). The two rails 36 and 39 are joined by tie rods M3 and are carried byplanks 4| upon a floor 42 (Fig. 1) which may consist of the workpiece tobe cut.

Two adjacent ends of the rails 33 and 39 carry brackets '43 and 44,respectively (Fig. 3). A shaft has two ends mounted in the brackets 43and 44 and carries a sprocket wheel 46 which is keyed upon the shaft 45.A chain 41 extends around the sprocket wheel 43.

The chain 4'! also extends around a sprocket wheel 48 keyed upon a shaft49 which extends close to the opposite ends of the rails 36 and 39. Oneend of the shaft 49 is mounted in a bracket 50 which is carried by anelongated support 5| connected by rivets 52 with the end of the rail 36.The opposite end of the shaft 49 carries a worm gear 53 and is mountedin a bracket 54 which is connected by a support 55 with an end of therail 39.

As shown in Figures 1 and 3, the support 55 is connected with a curvedextension piece 56 having'a guide I2 provided with a retaining edge 51.An elongated support 58 is pivotally connected at 59 with the bracket54. The support 58 has a guiding flange 68 for a worm shaft 6I which isintegral with a worm 62 and which is supported upon a projection 63 ofthe support 58. The worm 62 is adapted to mesh with the worm gear 53which is keyed upon the shaft 49. The upper end of the worm shaft 6| isfirmly connected with a hand-operated crank 64. A lever 65 is pivotallymounted at 66 upon the support 58. The free end of the lever 65 has theform of a hook 61 adapted to engage the edge 51 of the guide 12. Thesupport 58 extends between the guide I2.

The chain 41 extends below the frame I8 and over the sprocket wheels 46and 48. One end of the chain 41 is attached by the usual clamp 68 to aside edge of the platform 24. A clamp 69 connects the other end of thechain 41 to the opposite side edge of the platform 24.

It is apparent that when the worm 62 is in engagement with the worm gear53, the frame I8 may be moved upon the rails 36 and 39 by tuming thecrank 64. On the other hand, the frame I8 may be moved by hand as soonas the worm 62 is disengaged by releasing the hook 61.

The posts I2 and I4 are connected with each other by transverse bars 18and 'II (Fig. 2). Similar bars I3 and I4 are situated at the oppositeside of the frame and connect the posts l3 and I5 (Fig. 1).

The bars I8 and 13 serve as supports for a transverse shaft 15 whichextends through the bars and which constitutes a part of the mechanismfor adjusting the position of a cutting wheel I6 which is made ofsilicon carbide or any other suitable material. That end of the shaft 15which projects out of the bar I8, carries a collar 11. The opposite endof the shaft 15, which projects out of the bar 13, carries a crank I8provided with a handle I9.

A bevel gear 88 is firmly mounted upon the shaft I5 and is situatedwithin the frame I8. Another bevel gear 8| which is also firmly mountedupon the shaft I5, is situated outside of the frame I8, between thecrank I8 and the bar I3. The bevel gear 88 meshes with a bevel gear 82while the bevel gear 8| meshes with a bevel gear 83.

The bevel gear 82 is firmly connected with a vertical shaft 84 and iscarried by a horizontal extension 85 of the bar II. The lower end of theshaft 84 extends through the lower platform 24 and carries a washer orring 86 (Fig. 2). The shaft 84 is threaded and its screw threads meshwith a nut 81 which is attached by rivets 88 to a movable platform 89.

The bevel gear 83 (Fig. l) is firmly connected with a vertical threadedshaft 98 and is carried by a horizontal extension 9| of the bar I4. Anut 92 is mounted upon and meshes with the shaft 98. The nut 92 isattached by rivets 93 (Fig. 4) to the movable platform 89. The lower endof the shaft 98 extends through the platform 24.

The movable platform 89 carries an electromotor 94 (Fig. 2) which isfirmly attached to the platform 89 and is used for driving the cuttingwheel I6. The platform 89 has a downwardly bent portion which isconnected by bolts 95 with a front plate 96.

As shown in Figures 1 and 3, the front plate 96 overlaps the adjacentedges of the P S S and I3. A vertical elongated guide 91 is in contactwith the opposite side of the post I2 and is con nected with the plate96 by bolts 98. The guide 91 and the adjacent edge of the plate 96 forma groove which receives an edge of the post I2, so that; the plate 96can slide up and down upon the post I2.

The post I3 extends into a similar groove formed by the adjacent edge ofthe plate 96 and a guide 99 connected to the plate 96 by bolts I88.

The shaft I8I of the motor 94 extends through a circular opening I82provided in the plate 96. The cutting disc 16 is driven from the shaftIN by means of a V-belt drive which includes pulleys I83 and I84 keyedupon the shaft I8I, pulleys I85 and I86 keyed upon the disc shaft I8'I,a belt I88 extending over the pulleys I83 and I85, and a belt I89extending over the pulleys I84 and I86 (Fig.2).

The disc shaft I8! is carried by a bearing II8 which is integral with anupwardly extending threaded shaft III. The shaft II I extends through abracket H2 and carries nuts H3 and H4 which engage the bracket II2, sothat the latter carries the shaft III. This arrangement serves as aconvenient belt tightener.

The bracket H2 is integral with a flange I I5 which is attached by boltsII6 with a swingable plate 1. The plate II! is connected by circularlydisposed bolts II8 with an annular guide II9 extending over the edges ofthe opening I82 formed in the plate 96. Thus the plate II! which isprovided with an opening I28 in alinement with the opening I82, ismounted within the plate 96 and can swing along with the guide I I9 inrelation to the plate 96.

The cutting wheel "I6, the bearing I I8 and the bracket II2 swing alongwith the plate I H. The plate II! is maintained in its lower position,shown in full lines in Figure 1, by two screws I2I which extend throughopenings provided in the plate II! and which can be screwed intosuitably located threaded openings provided in the front plate 96. Inthis lower position, the cutting wheel 76 extends below the frame I8 andmay be used for cutting a. workpiece 42 which carries the machine.

After the screws I2I have been unscrewed, the plate II! and the cuttingwheel I6 connected therewith may be swung into an upper positionindicated by broken lines in Figure 1. The plate H1 is secured in itsupper position by screwing the screws I 2I, which extend throughopenirgs formed in the plate II 1, into suitably located threadedopenings I22 provided in the front plate 96.

In its upper position, the cutting wheel I6 extends above the frame I8and through a slot I23 formed in an upper table I24. The upper ends ofthe posts I2 and I4 are connected with each other by an angulartransverse bar I25 having an end which extends in front of the frame I8and which is additionally supported by an inclined strut I26 affixed tothe post I2 (Fig. 2). A transverse bar I21 (Fig. 1) which is attached tothe posts I3 and I5, is of similar structure. The table I24 carriesclamps I 28 which are connected to the bar I25 and clamps I29 which areconnected to the bar I 21. Thus the table I24, which extendsconsiderably in front of the frame I8, is firmly connected to the frame.

The table I24 carries an angular guide I38 for a workpiece placed uponthe table. The guide I38 is movable within a groove provided in thetable I24; its angular position may be adjusted by a winged nut I3I.

When the wheel I3 is cutting in its lower position, the pressure exertedby it upon the workpiece may raise the wheels 25 and 26'oif their rail36. To prevent this, the rail 36 is connected with an inwardly extendingflange I32 (Fig. 2) which may be engaged from beneath by the bent end ofa lever I33. The lever I33 is carried by supports I34 attached to theplatform 24. An upwardly extending end I35 of the lever I33 may be usedas a handle to shift the lever I33 toward or away from the flange I32.

The wheel I6 cuts dry in its upper position, while it is supplied withwater or other liquid from three nozzles I36, I31 and I38 (Figs. 3 and5) when cutting in its lower position. A water container (not shown) ispreferably placed upon the upper table I24 and is connected by a rubbertube or hose I39 with a pipe I49 communicating with the three nozzles.The nozzles are supported at suitable positions close to the cuttingwheel I6 by an angular bracket I4I carrying a clamp I42 for holding thenozzles. The bracket I4I is mounted at I43 upon the front plate 95 andits position may be adjusted by a winged nut I44.

A splash pan I45 (Figs. 2 and 5) has a front wall I46 covering the upperhalf of the wheel I6, and a rear wall I41 provided with a lowersemi-circular edge which slides in a groove I43 of the bearing Ilfl.Thus the bearing H4 serves as a support for the splash pan I45 which maybe turned about the bearing I I9.

The splash pan I45 is held in a selected posi tion by a screw I49 whichpresses a semi-annular projecting extension I50 of the rear wall I4!against a butt I5I. The screw I49 is carried by a front portion I52 of abracket I53 which carries the member I5I. The bracket I53 is attached tothe bracket I I2 by a bolt I54.

As already stated, the cutting wheel I6 may be swung from its lowerposition shown in full lines in Figure l to its upper position showntherein in broken lines, or vice-versa. In the course of this swingingmovement of the wheel I6, the plate I I! along with its guide I I9 turnupon the circular edge of the opening I92 provided in the plate 95. Thebracket II2, the shaft III, the bearing N9, the pulleys I95 and I96 andthe disc shaft IU'I move along with the plate In and the disc I6. Theplate III is fixed in its lower position by screws I2I which are screwedinto suitably located openings provided in the plate 96. Openings I22receive these screws when the plate III is to be maintained in its upperposition.

The cutting wheel I6 may be raised or lowered, and its position inrelation to a workpiece may be conveniently adjusted by turning thecrank I8. The shaft I5 and the bevel gears 80 and BI rotate along withthe crank, so that the bevel gears 82 and 83 and the vertical shafts 84and 90 are rotated. Since the nuts 81 and 92 which are firmly connectedto the platform 39, mesh with the screw threads of the shafts 84 and 99,a rotation of these shafts will cause the platform 89 to move up ordown. The front plate 96 is firmly connected with the platform 89, sothat it will move along with the platform, while the guides 9I and 99slide upon the edges of the parts I2 and I3. The motor 94 carried by theplatform 89 moves along with the platform, while the plate III mountedin the plate 96 and the parts connecting the cutting wheel I6 with theplate I I1 move along with the plate 96.

In the lower position of the wheel I6 the cutting is done on a lowertable or on the floor,

Whichever is more suitable as far as the location of a workpiece for aparticular operation is concerned. Water may be supplied through acontainer (not shown) which is placed upon the table I24 and which isconnected with the hose I 39 transmitting the water through the threenozzles I36, I3! and I38 to the wheel I6. The operator is protected frombeing splashed by the adjustable splash pan I45.

In the upper position of the wheel I6, which is shown by broken lines inFigure 1, the cutting is done on the table I24. The wheel I6 extendsthrough the slot I23 provided in the table I24 and the workpiece may beguided along the adjustably mounted guide I39.

When the machine is used as a general purpose saw table, the clamps 63and 69 can be removed, thereby separating the frame I9 from the chain 41and the chain drive. The machine may be then placed upon a floor or workbench and used without the rails 36 and 39. The machine will then reston pillow blocks 28 and 32 which extend slightly below the wheels.

In general, it is apparent that the specific illustrations shown abovehave been given by way of illustration and not by way of limitation andthat the structures above described are subject to other variations andmodifications without departing from the scope or intent of theinvention. All of such variations and modifications are to be includedwithin the scope of the present invention.

What is claimed is:

1. In a cutting machine, in combination, a frame, means supporting acutting wheel for swinging said cutting wheel from an upper position toa lower position, and vice versa, said cutting wheel projecting beyondsaid frame and being capable of cutting in both said positions, meansadjustably mounted in said frame and carrying said wheel-supportingmeans for finely adjusting the position of said wheel, and meansconnected with said frame for moving the same.

2. In a cutting machine, a plate, a frame constituting a vertical guidefor said plate, another plate swingably mounted in' the first-mentionedplate. means connected with said other plate for supporting a cuttingwheel, whereby said cutting wheel may be swung from an upper workingposition to a lower working position, and vice versa, and means carriedby said frame and connected with the first-mentioned plate for adjustingthe position thereof relatively to said frame.

3. In a cutting machine, a frame, an upper table carried by said frameand having a slot formed therein for a cutting wheel in the uppercutting position of the latter, rollers carried by said frame, railssupporting said rollers, means carrying said cutting wheel and turnableto swing said cutting wheel from said upper position to a lower cuttingposition wherein said cutting wheel extends below said rails, and viceversa, means adjustably mounted in said frame and carrying saidwheel-carrying means for finely adjusting the position of said wheel,and means connected with said frame for moving it upon said rails.

4. In a cutting machine, posts, a plate guided vertically in some ofsaid posts, a horizontal plate firmly connected with the first-mentionedplate, a motor carried by the second-mentioned plate and having a motorshaft extending through an opening formed in the first-mentioned plate,a driving pulley carried by said motor shaft, a third plate swingablymounted in the first-mentioned plate, a bracket firmly connected withthe third-mentioned plate, a shaft for a cutting wheel, a driven pulleycarried by said wheel shaft and being driven by the first-mentionedpulley, a bearing connected with said bracket and carrying said wheelshaft, whereby the shaft carrying the cutting wheel may be swung from anupper cutting position to a lower cutting position, and vice versa, andmeans connected with the second-mentioned plate for shifting the sameand thereby finely adjusting the position of said cutting wheel.

5. In a cutting machine, a frame comprising posts and bars between someof said posts, a plate guided vertically in some of said posts, ahorizontal plate firmly connected with the firstmentioned plate, acutting-wheel drive carried by the second-mentioned plate, a third plateswingably mounted in the first-mentioned plate, a cutting-wheel supportcarried by the thirdmentioned plate, a nut firmly connected with thesecond-mentioned plate, a shaft meshing with said nut, and a gear driveoperatively connected with said shaft.

6. In a cutting machine, in combination, a frame, means supporting acutting wheel for swinging said cutting wheel from an upper position toa lower position, and vice versa, said cutting wheel projecting beyondsaid frame and being capable of cutting in both said positions, meansadjustably mounted in said frame and carrying said wheel-supportingmeans for finely adjusting the position of said wheel, a fiat-toppedrail, a sharp-topped rail, two rollers having V- shaped grooves engagingsaid sharp-topped rail, a single roller having a fiat-bottomed grooveengaging said fiat-topped rail, bearings carrying said rollers andcarried by said frame, said cutting wheel extending close to thesharptopped rail in the lower position of the wheel, a I

flange carried by said sharp-topped rail, and a locking lever carried bysaid frame and adapted to engage said flange to prevent said frame frombeing raised off the rails.

'7. In a cutting machine, in combination, a frame, means supporting acutting wheel for swinging said cutting wheel from an upper position toa lower position, and vice versa, said cutting wheel projecting beyondsaid frame and being capable of cutting in both said positions, meansadjustably mounted in said frame and carrying said wheel-supportingmeans for finely adjusting the position of said wheel, rails carryingsaid frame, a sprocket wheel, a chain connected to said frame andengaging said sprocket wheel, a worm gear rotatable along with saidsprocket wheel, a worm adapted to drive said worm gear, and meanssupporting said worm and pivotally connected with one of said rails tomaintain said worm in engagement with said worm gear and to interruptthis engagement.

8. In a cutting machine, in combination, a frame, means supporting acutting Wheel for swinging said cutting wheel from an upper position toa lower position, and vice versa, said cutting wheel projecting beyondsaid frame and being capable of cutting in both said positions, meansadjustably mounted in said frame and carrying said wheel-supportingmeans for finely adjusting the position of said wheel, a splash panadjustably carried by the first-mentioned means and enclosing a part ofsaid cutting wheel, nozzles supplying water to said cutting wheel in itslower position, and a bracket carried by the second-mentioned means andcarrying said nozzles.

FRANK G. POHL.

